WO2000041389A1 - Signal processing unit for a digital tv system - Google Patents

Signal processing unit for a digital tv system Download PDF

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Publication number
WO2000041389A1
WO2000041389A1 PCT/DE2000/000037 DE0000037W WO0041389A1 WO 2000041389 A1 WO2000041389 A1 WO 2000041389A1 DE 0000037 W DE0000037 W DE 0000037W WO 0041389 A1 WO0041389 A1 WO 0041389A1
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Prior art keywords
image
processing unit
signal processing
reading
unit according
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PCT/DE2000/000037
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German (de)
French (fr)
Inventor
Bernd Burchard
Ralf Schwendt
Original Assignee
Infineon Technologies Ag
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Application filed by Infineon Technologies Ag filed Critical Infineon Technologies Ag
Priority to DE50000200T priority Critical patent/DE50000200D1/en
Priority to JP2000593018A priority patent/JP2002534916A/en
Priority to EP00904834A priority patent/EP1142317B1/en
Publication of WO2000041389A1 publication Critical patent/WO2000041389A1/en
Priority to US09/894,815 priority patent/US7034889B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0127—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter
    • H04N7/0132—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter the field or frame frequency of the incoming video signal being multiplied by a positive integer, e.g. for flicker reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440281—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping

Definitions

  • the invention relates to a signal processing unit for a digital TV system.
  • Digital TV systems differ from the conventional analog television systems in that they process and process the image and sound signals almost exclusively digitally, which are transmitted or available via various media such as satellite, cable, antenna, CD-ROM, DVD, etc. be put. These signals are generally digitally encoded and compressed according to a certain standard (for example DVB-T or MPEG-2 or the like) and optionally encrypted. Systems of this type therefore require complex signal processing that can practically only be implemented digitally.
  • a certain standard for example DVB-T or MPEG-2 or the like
  • the invention has for its object to develop such a signal processing unit for a digital TV system in such a way that the frame rate can be increased to improve the image impression with relatively little additional effort.
  • a signal processing unit which according to claim 1 has a first device for applying a video signal with graphic picture elements and text characters and a second device for frame rate conversion, the output of the first device being connected to the input of the second device and the output of the second device a driver stage for driving a display.
  • the second device for frame rate conversion is at the end of the processing chain and thus the frame rate conversion is carried out after all graphics operations, on the one hand it is achieved that the graphics operations with the lower frame rate can be carried out so that the on ⁇ requirements not be at the speed of these circuits ⁇ Sonder are high and do not have to be increased.
  • the overall signal that is, TV picture data and graphics or text data
  • a common image storage device is preferably provided, which is connected to the first and the second device for reading in and reading out image data. This saves additional components.
  • At least one input stage for receiving compressed image data from at least one transmission medium, and at least one decoding unit for converting the compressed image data into digital pixel data of a total data stream, which is fed to the first device, can be provided.
  • Fig. 1 shows the basic structure of such an embodiment
  • FIG. 2 shows a block diagram of the embodiment according to FIG. 1.
  • the data streams can be modulated using known digital methods (such as QPSK, QAM, COFDM) and optionally compressed (such as MPEG-1, MPEG-2), whereby new transmission standards such as DVB-T etc. can also be implemented.
  • One or more decoding units 2 are connected to the input stages 1. These are used, for example, to convert the compressed image data into digital pixel data and to combine the various individual data streams (image and sound signals) to form an overall data stream.
  • the decoding units 2 comprise, for example, an MPEG-2 decoder and various audio signal decoders (e.g. for stereo, surround, etc.).
  • Video signal (YUV signal) is then fed to a first device 3, with which it is acted upon for the reproduction of graphic picture elements and text characters.
  • a first device 3 can be, for example, an Internet browser or other graphical user interfaces via which the user can communicate interactively via a telephone line or the like. is possible.
  • a second device 4 for frame rate conversion is connected to the output of the first device 3 and is used to convert the output signal of the first devices, which for example contains a refresh rate of 50 ( ⁇ O) Hz, into a 100 (120) Hz picture signal. This can be done either by repeating the previous image or by motion estimation and image interpolation. These two methods per se are known from analog television image processing.
  • the decoding unit 2 as well as the first and the second device 3, 4 are connected to a common image storage device 5, whereby a substantial saving of components is possible.
  • the output signal of the second Device is finally a drive unit 6 performs supplied ⁇ , to which a display is connected.
  • FIG. 2 shows the interconnection of the individual blocks in detail.
  • Three input stages 11, 12, 13 are provided, each of which is adapted to different program sources such as CD-ROM, DVD, satellite antenna, cable, etc.
  • the output signals of these input stages are supplied, for example, as 50 Hz MPEG data streams to the subsequent digital decoding units 21, 22, which are also connected to one another.
  • the decoded picture signals then arrive at the first device 3 for applying the above-mentioned graphic picture elements and text characters to the video signal.
  • the second device 4 for frame rate conversion is connected to the first device 3 in the manner described above, the output signal of which is supplied to the driver unit 6.
  • a display 6a and loudspeaker 6b are connected to the driver unit.
  • this figure also shows the common image storage device 5, to which both the decoding units 21, 22 and the first and second devices 3, 4 can access.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Television Signal Processing For Recording (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The invention relates to a signal processing unit for a digital TV system. The inventive unit is especially characterized by a first device (3) provided for admitting a video signal containing graphic picture elements and text characters, and by a second device (4) for converting the image rate. The output of the first device (3) is connected to the input of the second device (4), and the output of the second device (4) actuates a driver stage (6) for driving a display.

Description

Beschreibungdescription
Signalverarbeitungseinheit für digitales TV-System S ignalverarbeitungseinheit for digital TV system
Die Erfindung betrifft eine Signalverarbeitungseinheit für ein digitales TV-System.The invention relates to a signal processing unit for a digital TV system.
Digitale TV-Systeme unterscheiden sich von den geläufigen analogen Fernsehsystemen durch eine fast ausschließlich digi- tale Verarbeitung und Aufbereitung der Bild- und Tonsignale, die über verschiedene Medien wie Satellit, Kabel, Antenne, CD-ROM, DVD usw. übertragen bzw. zur Verfügung gestellt werden. Diese Signale sind im allgemeinen nach einem bestimmten Standard digital codiert und komprimiert (zum Beispiel DVB-T bzw. MPEG-2 o.a.) sowie gegebenenfalls verschlüsselt. Systeme dieser Art erfordern somit eine aufwendige Signalverarbeitung, die praktisch nur auf digitalem Wege realisierbar ist.Digital TV systems differ from the conventional analog television systems in that they process and process the image and sound signals almost exclusively digitally, which are transmitted or available via various media such as satellite, cable, antenna, CD-ROM, DVD, etc. be put. These signals are generally digitally encoded and compressed according to a certain standard (for example DVB-T or MPEG-2 or the like) and optionally encrypted. Systems of this type therefore require complex signal processing that can practically only be implemented digitally.
Der Erfindung liegt die Aufgabe zugrunde, eine solche Signal- verarbeitungseinheit für ein digitales TV-System in der Weise weiterzubilden, daß bei relativ geringem zusätzlichen Aufwand die Bildrate zur Verbesserung des Bildeindrucks erhöht werden kann.The invention has for its object to develop such a signal processing unit for a digital TV system in such a way that the frame rate can be increased to improve the image impression with relatively little additional effort.
Gelöst wird diese Aufgabe mit einer Signalverarbeitungseinheit, die gemäß Anspruch 1 eine erste Einrichtung zur Beaufschlagung eines Videosignals mit graphischen Bildelementen und Textzeichen und eine zweite Einrichtung zur Bildratenwandlung aufweist, wobei der Ausgang der ersten Einrichtung mit dem Eingang der zweiten Einrichtung verbunden ist und der Ausgang der zweiten Einrichtung eine Treiberstufe zum Ansteuern eines Displays beaufschlagt.This object is achieved with a signal processing unit which according to claim 1 has a first device for applying a video signal with graphic picture elements and text characters and a second device for frame rate conversion, the output of the first device being connected to the input of the second device and the output of the second device a driver stage for driving a display.
Dadurch, daß die zweite Einrichtung zur Bildratenwandlung am Ende der Verarbeitungskette steht und somit die Bildratenwandlung nach allen Grafikoperationen durchgeführt wird, wird einerseits erreicht, daß die Grafikoperationen mit der niedrigeren Bildrate ausgeführt werden können, so daß die An¬ forderungen an die Schnelligkeit dieser Schaltungen nicht be¬ sonders hoch sind bzw. nicht erhöht werden müssen. Andererseits wird nur eine Schaltung zur Bildratenwandlung benötigt, die mit dem Gesamtsignal (das heißt TV-Bilddaten und Grafikbzw. Textdaten) beaufschlagt wird.Because the second device for frame rate conversion is at the end of the processing chain and thus the frame rate conversion is carried out after all graphics operations, on the one hand it is achieved that the graphics operations with the lower frame rate can be carried out so that the on ¬ requirements not be at the speed of these circuits ¬ Sonder are high and do not have to be increased. On the other hand, only one circuit for converting the frame rate is required, to which the overall signal (that is, TV picture data and graphics or text data) is applied.
Die Unteransprüche haben vorteilhafte Weiterbildungen der Erfindung zum Inhalt.The dependent claims contain advantageous developments of the invention.
Vorzugsweise ist eine gemeinsame Bildspeichereinrichtung vorgesehen, die mit der ersten und der zweiten Einrichtung zum Ein- und Auslesen von Bilddaten verbunden ist. Dadurch werden weitere Bauelemente eingespart.A common image storage device is preferably provided, which is connected to the first and the second device for reading in and reading out image data. This saves additional components.
Weiterhin kann mindestens eine Eingangsstufe zum Empfang von komprimierten Bilddaten von mindestens einem Übertragungsmedium, sowie mindestens eine Dekodiereinheit zum Umsetzen der komprimierten Bilddaten in digitale Pixeldaten eines Ge- samtdatenstroms, der der ersten Einrichtung zugeführt wird, vorgesehen sein.Furthermore, at least one input stage for receiving compressed image data from at least one transmission medium, and at least one decoding unit for converting the compressed image data into digital pixel data of a total data stream, which is fed to the first device, can be provided.
Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der folgenden Beschreibung einer bevorzugten Ausführungsform anhand der Zeichnung. Es zeigt:Further details, features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawing. It shows:
Fig. 1 die Grundstruktur einer solchen Ausführungsform undFig. 1 shows the basic structure of such an embodiment and
Fig. 2 ein Blockschaltbild der Ausführungsform gemäß Figur 1.FIG. 2 shows a block diagram of the embodiment according to FIG. 1.
Eine erfindungsgemäße Signalverarbeitungseinheit für ein digitales TV-System umfaßt gemäß Figur 1 mehrere Eingangsstufen 1 für TV-Datenströme von verschiedenen Quellen. Dabei kann es sich um entsprechende Tuner für einen Empfang über Antenne, Kabel oder Satellit oder um andere Eingangsstufen zum Anschluß von Laufwerken für CD-ROMs, DVDs usw. handeln. Die Datenströme können dabei mit bekannten digitalen Verfahren moduliert (wie QPSK, QAM, COFDM) und gegebenenfalls komprimiert (wie MPEG-1, MPEG-2) sein, wobei auch neue Übertragungsstandards wie DVB-T usw. realisierbar sind.According to FIG. 1, a signal processing unit according to the invention for a digital TV system comprises several input stages 1 for TV data streams from different sources. These can be appropriate tuners for reception via antenna, cable or satellite or other input stages for connecting drives for CD-ROMs, DVDs etc. The data streams can be modulated using known digital methods (such as QPSK, QAM, COFDM) and optionally compressed (such as MPEG-1, MPEG-2), whereby new transmission standards such as DVB-T etc. can also be implemented.
An die Eingangsstufen 1 schließen sich eine oder mehrere Dekodiereinheiten 2 an. Diese dienen zum Beispiel dazu, die komprimierten Bilddaten in digitale Pixeldaten umzusetzen und die verschiedenen Einzeldatenströme (Bild- und Tonsignale) zu einem Gesamtdatenstrom zu vereinen. Die Dekodiereinheiten 2 umfassen zu diesem Zweck zum Beispiel einen MPEG-2-Dekodierer und verschiedene Audiosignal-Dekodierer (z.B. für Stereo, Surround usw. ) .One or more decoding units 2 are connected to the input stages 1. These are used, for example, to convert the compressed image data into digital pixel data and to combine the various individual data streams (image and sound signals) to form an overall data stream. For this purpose, the decoding units 2 comprise, for example, an MPEG-2 decoder and various audio signal decoders (e.g. for stereo, surround, etc.).
Das am Ausgang der Dekodiereinheiten 2 anliegende digitaleThe digital at the output of the decoding units 2
Videosignal (YUV-Signal) wird dann einer ersten Einrichtung 3 zugeführt, mit der es zur Wiedergabe von graphischen Bildelementen und Textzeichen beaufschlagt wird. Hierbei kann es sich zum Beispiel um Internetbrowser oder andere graphische Benutzeroberflächen handeln, über die eine interaktive Kommunikation des Benutzers über Telefonleitung o. . möglich ist.Video signal (YUV signal) is then fed to a first device 3, with which it is acted upon for the reproduction of graphic picture elements and text characters. This can be, for example, an Internet browser or other graphical user interfaces via which the user can communicate interactively via a telephone line or the like. is possible.
An den Ausgang der ersten Einrichtung 3 ist eine zweite Einrichtung 4 zur Bildratenwandlung angeschlossen, mit der das Ausgangssignal der ersten Einrichtungen, das zum Beispiel eine Bildwiederholfrequenz von 50 (βO) Hz beinhaltet, in ein 100 (120) Hz Bildsignal umgewandelt wird. Dies kann entweder durch eine Wiederholung des vorausgegangenen Bildes, oder durch eine Bewegungsschätzung und Bildinterpolation erfolgen. Diese beiden Verfahren an sich sind aus der analogen Fernsehbildverarbeitung bekannt.A second device 4 for frame rate conversion is connected to the output of the first device 3 and is used to convert the output signal of the first devices, which for example contains a refresh rate of 50 (βO) Hz, into a 100 (120) Hz picture signal. This can be done either by repeating the previous image or by motion estimation and image interpolation. These two methods per se are known from analog television image processing.
Die Dekodiereinheit 2 sowie die erste und die zweite Einrichtung 3, 4 sind an eine gemeinsame Bildspeichereinrichtung 5 angeschlossen, wodurch eine wesentliche Einsparung von Bauelementen möglichen ist. Das Ausgangssignal der zweiten Einrichtung wird schließlich einer Treibereinheit 6 zuge¬ führt, an die ein Display angeschlossen ist.The decoding unit 2 as well as the first and the second device 3, 4 are connected to a common image storage device 5, whereby a substantial saving of components is possible. The output signal of the second Device is finally a drive unit 6 performs supplied ¬, to which a display is connected.
Figur 2 zeigt im Detail die Verschaltung der einzelnen Blö- cke. Es sind drei Eingangsstufen 11, 12, 13 vorgesehen, die jeweils an verschiedene Programmquellen wie CD-ROM, DVD, Satellitenantenne, Kabel usw. angepaßt sind.FIG. 2 shows the interconnection of the individual blocks in detail. Three input stages 11, 12, 13 are provided, each of which is adapted to different program sources such as CD-ROM, DVD, satellite antenna, cable, etc.
Die Ausgangssignale dieser Eingangsstufen werden zum Beispiel als 50 Hz MPEG-Datenströme den nachfolgenden digitalen Dekodiereinheiten 21, 22, die auch untereinander verbunden sind, zugeführt.The output signals of these input stages are supplied, for example, as 50 Hz MPEG data streams to the subsequent digital decoding units 21, 22, which are also connected to one another.
Die dekodierten Bildsignale gelangen dann zu der ersten Ein- richtung 3 zur Beaufschlagung des Videosignals mit den oben genannten graphischen Bildelementen und Textzeichen.The decoded picture signals then arrive at the first device 3 for applying the above-mentioned graphic picture elements and text characters to the video signal.
An die erste Einrichtung 3 ist die zweite Einrichtung 4 zur Bildratenwandlung in der oben beschriebenen Weise angeschlos- sen, deren Ausgangssignal der Treibereinheit 6 zugeführt wird. An die Treibereinheit sind ein Display 6a sowie Lautsprecher 6b angeschlossen.The second device 4 for frame rate conversion is connected to the first device 3 in the manner described above, the output signal of which is supplied to the driver unit 6. A display 6a and loudspeaker 6b are connected to the driver unit.
Schließlich ist auch in dieser Figur die gemeinsame Bildspei- chereinrichtung 5 gezeigt, auf die sowohl die Dekodiereinheiten 21, 22, als auch die erste und zweite Einrichtung 3, 4 Zugriff nehmen können. Finally, this figure also shows the common image storage device 5, to which both the decoding units 21, 22 and the first and second devices 3, 4 can access.

Claims

Patentansprüche claims
1. Signalverarbeitungseinheit für ein digitales TV-System, d a d u r c h g e k e n n z e i c h n e t, dass eine erste Einrichtung (3) zur Beaufschlagung eines Videosignals mit graphischen Bildelementen und Textzeichen und eine zweite Einrichtung (4) zur Bildraten- und Bildformatwandlung vorgesehen ist, wobei der Ausgang der ersten Einrichtung (3) mit dem Eingang der zweiten Einrichtung (4) verbunden ist und der Ausgang der zweiten Einrichtung (4) eine Treiberstufe (6) zum Ansteuern eines Displays (6a) beaufschlagt.1. Signal processing unit for a digital TV system, characterized in that a first device (3) for applying a video signal with graphic picture elements and text characters and a second device (4) for frame rate and picture format conversion is provided, the output of the first device ( 3) is connected to the input of the second device (4) and the output of the second device (4) acts on a driver stage (6) for driving a display (6a).
2. Signalverarbeitungseinheit nach Anspruch 1, g e k e n n z e i c h n e t d u r c h eine Bildspeicherein- richtung (5) , die mit der ersten und der zweiten Einrichtung (3, 4) zum Ein- und Auslesen von Bilddaten verbunden ist.2. A signal processing unit according to claim 1, a picture storage device (5) connected to the first and the second device (3, 4) for reading in and reading out picture data.
3. Signalverarbeitungseinheit nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t, dass mit der zweiten Einrichtung (4) die Bildrate durch Auslesen und Wiedergeben eines in der Bildspeichereinrichtung (5) gespeicherten vorausgegangenen Bildes erhöhbar ist.3. Signal processing unit according to claim 2, so that the frame rate can be increased by reading out and reproducing a previous image stored in the image storage device (5) with the second device (4).
4. Signalverarbeitungseinheit nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t, dass mit der zweiten Einrichtung (4) die Bildrate durch Auslesen und Wiedergeben eines in der Bildspeichereinrichtung (5) gespeicherten und durch Bewegungsauswertung und Bildinterpolation anhand von vorausgegangenen Bildern errechneten Zwis- chenbildes veränderbar ist.4. The signal processing unit as claimed in claim 2, so that the second device (4) can be used to change the frame rate by reading and reproducing an intermediate image stored in the image storage device (5) and calculated by motion evaluation and image interpolation on the basis of previous images.
5. Signalverarbeitungseinheit nach einem der Ansprüche 2 bis 4, d a d u r c h g e k e n n z e i c h n e t, dass mit der zweiten Einrichtung (4) das Bildformat durch Auslesen und Wiedergeben der in der Bildspeichereinrichtung (5) gespeicherten und durch Bewegungsauswertung und Pixelinterpolation unter Zuhilfenahme von vorausgegangenen Bildern errechneten Pixelzwischenwerte frei veränderbar ist.5. Signal processing unit according to one of claims 2 to 4, characterized in that with the second device (4) the image format by reading and reproducing the stored in the image storage device (5) and by motion evaluation and pixel interpolation intermediate pixel values calculated with the aid of previous images can be freely changed.
6. Signalverarbeitungseinheit nach einem der Ansprüche 2 bis 5, d a d u r c h g e k e n n z e i c h n e t, dass mit der zweiten Einrichtung (4) der Bild-Scan-Mode durch Auslesen und Wiedergeben der in der Bildspeichereinrichtung (5) gespeicherten und durch Bewegungsauswertung und Bildinterpolation unter Zuhilfenahme von vorausgegangenen Bildern errechneten Zwischenbilder von interlaced auf progressive Scan umsetzbar ist.6. Signal processing unit according to one of claims 2 to 5, characterized in that with the second device (4) the image scan mode by reading and reproducing the stored in the image storage device (5) and calculated by motion evaluation and image interpolation with the aid of previous images Interlaced images from interlaced to progressive scan can be implemented.
7. Signalverarbeitungseinheit nach einem der vorhergehenden Ansprüche, g e k e n n z e i c h n e t d u r c h mindestens eine Eingangsstufe (1) zum Empfang von komprimierten Bilddaten von mindestens einem Ubertragungsmedium, sowie mindestens eine Dekodiereinheit (2) zum Umsetzen der Bilddaten in digitale Pixeldaten eines Gesamtdatenstroms, der der ersten Einrichtung (3) zugeführt wird. 7. Signal processing unit according to one of the preceding claims, characterized by at least one input stage (1) for receiving compressed image data from at least one transmission medium, and at least one decoding unit (2) for converting the image data into digital pixel data of an overall data stream, which the first device (3) is fed.
PCT/DE2000/000037 1999-01-05 2000-01-04 Signal processing unit for a digital tv system WO2000041389A1 (en)

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Application Number Priority Date Filing Date Title
DE50000200T DE50000200D1 (en) 1999-01-05 2000-01-04 SIGNAL PROCESSING UNIT FOR DIGITAL TV SYSTEM
JP2000593018A JP2002534916A (en) 1999-01-05 2000-01-04 Signal processing device for digital TV system
EP00904834A EP1142317B1 (en) 1999-01-05 2000-01-04 Signal processing unit for a digital tv system
US09/894,815 US7034889B2 (en) 1999-01-05 2001-06-28 Signal processing unit and method for a digital TV system with an increased frame rate video signal

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DE19900136.7 1999-01-05
DE19900136 1999-01-05

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EP (1) EP1142317B1 (en)
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KR (1) KR100420982B1 (en)
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US20020044217A1 (en) 2002-04-18
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CN1327677A (en) 2001-12-19
EP1142317B1 (en) 2002-06-05
CN1217535C (en) 2005-08-31
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DE50000200D1 (en) 2002-07-11
EP1142317A1 (en) 2001-10-10
JP2002534916A (en) 2002-10-15

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